GEOS-Chem 12.9.0

GEOS-Chem 12.9.0
17 July 2020

This version includes the following updates:

1. Updated halogen chemistry
2. Improved cloudwater pH
3. Update offline lightning data through Dec 2019
4. Convert GEOS-Chem species database to YAML format, includes:
   a. Defining all species properties in the species database, not just advected species
   b. Initializing the species database with values read from the YAML file
5. Update GEOS-Chem core to apply masking and scaling to HEMCO inputs
6. Bug fix: Restore missing photolysis reactions from 12.8.0 and add an extra error check
7. Bug fix: Remove inefficient code that was slowing down computation of heterogenous chemistry rates
8. Corrected issue in GEOS-Chem dry-run where some files were not being properly marked for download
9. Bug fixes for the ObsPack diagnostic:
   a. Change units of ObsPack specific humidity (Q) field to g/kg
   b. Restore missing code due to Git merge that caused the OBSPACK MENU of input.geos not to be read
10. Fixes for reading meteorology fields in HEMCO:
    a. Skip reading FLASH_DENS and CONV_DEPTH fields when lightning NOx extension is turned off
    b. Change time cycle flag for meteorology fields to use exact date
11. Restore missing metadata for satellite timeseries diagnostics
12. Fix bug where non-advected species not updated in restart file

Read the GEOS-Chem online manual at:
http://manual.geos-chem.org

This release is compatible with GCHP. See the GCHP online manual for more information:
http://wiki.geos-chem.org/Getting_Started_With_GCHP

Learn how you can run GEOS-Chem on the Amazon Web Services cloud computing platform:
http://cloud.geos-chem.org